JP2000041283A - Mobile radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the mobile radio communication system that dynamically manages traffic in a radio block by managing channel quality of an indivisual mobile station device. SOLUTION: Line control station devices 1, 1a conduct line control with a mobile object. Plural base station devices 2, 2a, 2b, 2c, 2d, 2e are connected to the line control station devices 1, 1a by a wired or a radio channel. Plural mobile station devices 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g are connected to the base station devices through a wired or a radio channel. Extension exchanges 4, 4a and telephone sets 5, 5a connecting to them are connected to the line control station devices 1, 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio communication system, and more particularly to a mobile radio communication system for managing channel quality of a mobile station and reducing a load on a radio channel.

[0002]

2. Description of the Related Art In general, efficient use of radio sections in a mobile communication system is an important theme, and various systems are being considered. These systems are uniform in the wireless zone created by the base station device, and the transmission method is the same regardless of whether the line quality is good or not. It cannot be said that the data is used effectively.

As an example of a transmission technique utilizing such line quality data, a "data transmission system" described in Japanese Patent Application Laid-Open No. Sho 62-48827 is known.

In this publication, a technique is described in which the received electric field strength is measured, and the number of continuous transmissions of transmission data is controlled based on the measurement result.

[0005]

In the above-mentioned conventional mobile radio communication system, since the transmission data is transmitted uniformly the same number of times without effectively using the channel quality data in the radio section, useless transmission occurs. It has the disadvantage of increasing traffic.

Further, there is a disadvantage that a step of measuring the reception electric field strength every time is required.

An object of the present invention is to provide a mobile radio communication system that dynamically manages traffic in a radio section by managing and effectively utilizing the channel quality of each mobile station device.

[0008]

According to the mobile radio communication system of the present invention, a channel control station corresponding to the own zone receives channel quality data transmitted by a plurality of mobile stations in a plurality of zones via a base station in the own zone. Is received, and the line control station sets the number of continuous transmissions of data transmitted by the mobile station by a management table in which the management number of the mobile station and the line quality data correspond to the number of continuous transmissions. And

[0009] A plurality of mobile stations in a plurality of zones, a base station in the plurality of zones connected to the mobile stations via radio, and a plurality of line control stations connected to the base station and connected to an extension switching network. The channel control station sets the number of continuous transmissions based on channel quality data of the plurality of mobile stations.

A plurality of mobile stations in a plurality of zones, a base station in the plurality of zones connected to the mobile stations via radio, and a plurality of line control stations connected to the base station and connected to an extension switching network. The channel control station has a management table for setting identification numbers, channel quality data, and the number of continuous transmissions of the plurality of mobile stations.

Further, the management table is characterized in that the line quality measurement data transmitted from the plurality of mobile stations is updated at a preset cycle.

[0012] The management table is characterized by comprising a data rewritable random access memory.

[0013] It is characterized in that the line quality data is measured by the mobile station and transmitted to the line control station via the base station in its own zone via radio.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a mobile radio communication system according to the present invention.

In the present embodiment shown in FIG. 1, a line control station device 1, 1a and a plurality of base station devices 2, 2a, 2b, connected to the line control station devices 1, 1a by wire or wirelessly.
2c, 2d, 2e and a plurality of mobile station devices 3, 3a, 3 connected to these base station devices via a wire or wirelessly.
b, 3c, 3d, 3e, 3f, 3g, extension exchanges 4, 4a connected to the line controller 1, 1a, telephones 5, 5a respectively connected to these extension exchanges, and a plurality of radio zones 6, 6a. , 6b, 6c, 6d, 6e.

FIG. 2 is a sequence diagram for explaining the operation of the line quality information.

FIG. 3 is a view for explaining a management table for setting the number of continuous transmissions.

Next, the operation of the present embodiment will be described in more detail with reference to FIGS. 1, 2 and 3.

In the mobile communication system, the line control station devices 1 and 1a are provided with mobile station device IDs of the mobile station devices 3 and 3a to 3g.
A management table shown in FIG. 3 for managing numbers and respective line qualities is provided. Each line control station device has a corresponding radio zone, the line control station device 1 manages the radio zones 6, 6a, 6b, and the line control station device 1a manages the radio zones 6c, 6d, 6e. . In each radio zone, the radio zone 6 has mobile station devices 3 and 3a and the base station device 2, the radio zone 6a has the mobile station device 3b and the base station device 2a, and the radio zone 6b is the mobile station device. 3c and the base station device 2b, the wireless zone 6c has mobile station devices 3d and 3e and the base station device 2c, the wireless zone 6d has the mobile station device 3f and the base station device 2d, and the wireless zone 6e It has a mobile station device 3g and a base station device 2e.

The line quality means the bit error rate on the transmission path.

This management table contains the mobile station devices 3, 3a to
Measurement data of each bit error rate is written corresponding to 3g.

Referring to FIG. 2, mobile station apparatuses 3 and 3a to 3
Reference numeral 3g receives broadcast information including system parameters, states, and the like from the base station apparatuses 2 and 2a to 2e in the own station zone as downlink information once every fixed period on the control channel. The mobile station devices 3, 3a to 3g measure the line quality (bit error rate) when receiving the downlink information, and send the line quality information to the base station devices 2, 2a to 2e in their own zone via radio. Send.

The base station apparatuses 2, 2a to 2e transmit line quality information to the line control station apparatuses 1, 1a in their own zone.

The line control station apparatuses 1 and 1a receive the line quality information, determine from which mobile station apparatus the signal is transmitted, set the optimum number of continuous transmissions, and update the contents of the management table. I do. Here, the number of consecutive transmissions means that data is transmitted continuously a predetermined number of times in order to prevent transmission errors. In this management table, the mobile station devices 3, 3a to
The bit error rate transmitted from 3g and the ID number of the mobile station device are stored and managed.

The number of consecutive transmissions determines the signal reception rate in the system, and the number of consecutive transmissions exceeding the value is calculated. The line control station devices 1 and 1a calculate the number of consecutive transmissions to the mobile station devices 3 and 3a to 3g from the data length of a signal transmitted at the time of call connection control on the control channel, and Perform management.

The line control station devices 1 and 1a refer to the management table when the call connection control of a certain mobile station device is performed,
The line quality information of the mobile station devices 3, 3a to 3g and the number of continuous transmissions according to the transmission data length are set, and the base station devices 2, 2a to 3g are set.
2e, the number of continuous transmissions is notified together with the data when the data is transmitted. Base station devices 2 and 2a to which the number of continuous transmissions has been notified
2e continuously transmits the transmission data the number of times notified to the corresponding mobile station devices 3, 3a to 3g. On the communication channel, the number of consecutive transmissions immediately after the mobile station devices 3, 3a to 3g have shifted to the communication channel depends on the number of consecutive transmissions on the control channel. For the subsequent number of consecutive transmissions, the same number of consecutive transmissions can be set by performing the same control as on the control channel.

That is, by reporting the channel quality information from the mobile station devices 3 and 3a to 3g to the channel control station devices 1 and 1a, optimal continuous transmission so that a reception rate of a predetermined value or more of downlink information can be secured. The number of times can be set.

As described above, the line control station apparatuses 1 and 1a have a management table in which the ID numbers of the mobile station apparatuses 3 and 3a to 3g correspond to the line quality information and the number of continuous transmissions. The management table updates the report of the line quality information transmitted from the mobile station devices 3, 3a to 3g at a set period, and links the reports based on the line quality information measured by the mobile station devices 3, 3a to 3g. It is a table for setting and managing the number of times of transmission. By changing the number of consecutive transmissions on the wireless channel from the information in this management table, it is possible to reduce the load on the wireless line and to ensure that a consultation rate above a certain value can be ensured for any line quality. Become.

The line control station apparatuses 1 and 1a can also be connected to the extension switching networks 4 and 4a, and can transmit the line quality information from the individual mobile station apparatuses 3 and 3a to 3g to the line control station apparatuses 1 and 1a. By managing with the management table of
The number of continuous transmissions can be changed in real time so that a reception rate equal to or higher than the value set in the system can be obtained.

Since the latest line quality data is sequentially written into the line management table, it is stored in a volatile memory such as a RAM.

[0032]

As described above, the mobile radio communication system according to the present invention can manage the line quality status of each mobile station device, so that the traffic in the radio section can be controlled by the control channel,
This has the effect of reducing the communication channel without distinguishing it and ensuring the reception rate at any place in the area.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a mobile radio communication system according to the present invention.

FIG. 2 is a sequence diagram illustrating an operation of line quality information.

FIG. 3 is a diagram illustrating a management table for setting the number of continuous transmissions.

[Explanation of symbols]

 1,1a Line control station device 2, 2a-2e Base station device 3,3a-3g Mobile station device 4,4a Extension switch 5,5a Telephone 6,6a-6e Wireless zone

Continued on the front page F term (reference) 5K014 AA01 DA05 EA00 FA11 GA01 HA00 5K042 AA06 CA02 DA11 EA02 FA15 JA04 5K067 AA12 AA13 DD17 DD45 EE02 EE10 EE16 EE23 FF16 GG01 HH06 HH22 HH23 KK15 LL11

Claims (6)

[Claims] 1. A line control station corresponding to the own zone receives line quality data transmitted by a plurality of mobile stations in a plurality of zones via a base station in the own station zone, and the line control station manages the mobile station. A mobile radio communication system, wherein the number of continuous transmissions of data transmitted by the mobile station is set by a management table in which a number and the line quality data correspond to the number of continuous transmissions. 2. A plurality of mobile stations in a plurality of zones, a base station in the plurality of zones connected to the mobile stations via radio,
A plurality of circuit control stations connected to the base station and connected to an extension switching network, wherein the circuit control station sets the number of continuous transmissions based on the circuit quality data of the plurality of mobile stations. Mobile radio communication system. 3. A plurality of mobile stations in a plurality of zones, and the plurality of zone base stations connected to the mobile stations via radio,
A plurality of circuit control stations connected to the base station and connected to an extension switching network, and the circuit control station has a management table for setting identification numbers, line quality data, and the number of continuous transmissions of the plurality of mobile stations; A mobile radio communication system, comprising: 4. The mobile radio communication system according to claim 3, wherein said management table updates channel quality measurement data transmitted from said plurality of mobile stations at a preset cycle. 5. The mobile radio communication system according to claim 4, wherein said management table is constituted by a data rewritable random access memory. 6. The line quality data measured by the mobile station and transmitted to the line control station via the base station in its own zone via radio. The mobile radio communication system according to claim 1.